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Tech Interview Questions

Practice the exact questions companies are asking right now.

Questions
18.6k
Companies
980
Updated
11.12.2026
18.6k Questions 980 Companies11.12.2026
PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

PLTCHK testimonial
PLTCHK

"I got asked a hardcore MCM DP question and I saw it on PracHub as well. Solved that question in 5 minutes. Without PracHub I doubt I could solve it in 5 hours. Though somehow didn't get hired, perhaps I guess I solved it too fast? /s"

_The_TaNk_ testimonial
_The_TaNk_

"Believe me i'm a student here jn US. Recently interviewed for MSFT. They asked me exact question from PracHub. I saw it the night before and ignored it cause why waste time on random sites. I legit wanna go back and redo this whole thing if I had chance. Not saying will work for everyone but there is certainly some merit to that website. And i'm gonna use it in future prep from now on like lc tagged"

Chris testimonial
ChrisSenior SWE, LinkedIn

"10 years of experience but never worked at a top company. PracHub's senior-level questions helped me break into FAANG at 35. Age is just a number."

sleepy33 testimonial
sleepy33

"I was skeptical about the 'real questions' claim, so I put it to the test. I searched for the exact question I got grilled on at my last Meta onsite... and it was right there. Word for word."

Jake testimonial
JakeSenior ML Engineer, Lyft

"Got a Google recruiter call on Monday, interview on Friday. Crammed PracHub for 4 days. Passed every round. This platform is a miracle worker."

nuggetlord testimonial
nuggetlord

"I've used LC, Glassdoor, and random Discords. Nothing comes close to the accuracy here. The questions are actually current — that's what got me. Felt like I had a cheat sheet during the interview."

Carlos testimonial
CarlosFull Stack, Shopify

"The solution quality is insane. It covers approach, edge cases, time complexity, follow-ups. Nothing else comes close."

boba.tea.vibes testimonial
boba.tea.vibes

"Legit the only resource you need. TC went from 180k -> 350k. Just memorize the top 50 for your target company and you're golden."

Andy testimonial
AndySWE-II, Google

"PracHub Premium for one month cost me the price of two coffees a week. It landed me a $280K+ starting offer."

couchpotato99 testimonial
couchpotato99

"Literally just signed a $600k offer. I only had 2 weeks to prep, so I focused entirely on the company-tagged lists here. If you're targeting L5+, don't overthink it."

Shruti testimonial
ShrutiData Engineer, Salesforce

"Coaches and bootcamp prep courses cost around $200-300 but PracHub Premium is actually less than a Netflix subscription. And it landed me a $178K offer."

midnightramen testimonial
midnightramen

"I honestly don't know how you guys gather so many real interview questions. It's almost scary. I walked into my Amazon loop and recognized 3 out of 4 problems from your database."

Bianca testimonial
BiancaFrontend Eng, Figma

"Discovered PracHub 10 days before my interview. By day 5, I stopped being nervous. By interview day, I was actually excited to show what I knew."

tambrahm007 testimonial
tambrahm007

"I recently cleared Uber interviews (strong hire in the design round) and all the questions were present in prachub."

toa testimonial
toa

"The search is what sold me. I typed in a really niche DP problem I got asked last year and it actually came up, full breakdown and everything. These guys are clearly updating it constantly."

Showing 20 results
OpenAI logo
OpenAI
Hard
Data Scientist Locked

Assess free-month promotion impact

This question evaluates a data scientist's competency in experimental design, causal inference, metric definition and prioritization, bias identificat...

Analytics & ExperimentationCausal InferenceMetrics & KPIs
19
0
288 people solved
Jan 22, 2026
Coinbase logo
Coinbase
Easy
Software Engineer

Clarify CodeSignal partial credit and score access

CodeSignal Multi‑Level Task Scoring and Score Visibility Context You are completing a multi‑level coding task on CodeSignal as part of a take‑home ass...

Behavioral & LeadershipTesting & Quality
30
0
211 people solved
Sep 6, 2025
Meta logo
Meta
Medium
Data Scientist

Compute CTR overall and by campaign type

Write SQL to compute: (Q1) overall click-through rate (CTR = clicks/impressions) in the last week; (Q2) CTR by campaign_type in the last week. Assume ...

Data Manipulation (SQL/Python)
5
0
45 people solved
Oct 13, 2025
Medium
Software Engineer

Explain RF/analog IC interview fundamentals

Explain RF/analog IC interview fundamentals You are interviewing for an RF/analog IC design role. Answer the following conceptual questions (no code r...

Software Engineering Fundamentals
17
0
226 people solved
Aug 5, 2025
Amazon logo
AmazonGoogleMicrosoftMeta

Also asked at Microsoft, Meta

Easy
Software Engineer

Count Odd Integers in an Inclusive Range

Problem Return how many odd integers lie between nonnegative low and high,inclusive. `cpp class Solution { public: int countOdds(int low, int high...

Coding & AlgorithmsMath & Number Theory
0
0
10 people solved
Instacart logo
Instacart
Hard
Data Scientist Locked

Design and Interpret an A/B Test

This question evaluates a data scientist's competency in experimental design and applied statistics, encompassing power and sample-size calculations, ...

Analytics & ExperimentationExperiment Design (A/B Testing)Experiment Analysis & Readout
27
0
220 people solved
May 3, 2026
Instacart logo
Instacart
Hard
Software Engineer Locked

Design an Inventory Management System

Design an inventory platform for receipts, reservations, releases, adjustments, fulfillment, and movement history across locations. The case examines ...

System DesignSystem Design FundamentalsTransactions & Isolation
9
0
126 people solved
Jun 30, 2026
Stripe logo
Stripe
Medium
Software Engineer Locked

How to find the cheapest flight within K stops

This question evaluates understanding of graph algorithms and constrained shortest-path modeling, focusing on reasoning about weighted directed edges,...

Coding & AlgorithmsGraphsDynamic Programming
20
0
187 people solved
Feb 11, 2026
Illumio logo
Illumio
Hard
Software EngineerSenior+ Locked

Design a Time-Series Database

Design a time-series database for sustained measurement ingest and range queries across labeled series. Explore partitioning, immutable storage, label...

System Design
1
0
37 people solved
Jul 9, 2026
Tesla logo
Tesla
Medium
Backend EngineerSenior+

Compute time to burn tree

Given the root of a binary tree and the value of a target node that starts burning at time 0, fire spreads every minute from a burning node to its lef...

Coding & Algorithms
12
0
88 people solved
Jan 25, 2026
Circle logo
Circle
Medium
Software Engineer

Trace and reduce redundant curl requests

Instrument and Optimize a Client's HTTP Requests for a Workflow You are pair-programming with the interviewer. You have a client (a script or applicat...

System DesignAPI Integration & HTTP ClientsCaching
18
0
182 people solved
Jul 17, 2025
Stripe logo
Stripe
Medium
Data Scientist

Write SQL to detect recurring non-subscription users

You have two tables: merchant and transaction. Assume 'today' is 2025-09-01. Schema: merchant(merchant_id INT PK, merchant_name TEXT, country TEXT, cr...

Data Manipulation (SQL/Python)
3
0
47 people solved
Oct 13, 2025
Amazon logo
AmazonMetaUber

Also asked at Uber, Google, Bloomberg, Anduril, Apple

Easy
Software Engineer

Verify Lexicographic Word Order under a Supplied Alphabet

Problem The string order is a permutation of the lowercase English alphabet from earliest to latest. Return whether words is lexicographically nondecr...

Coding & AlgorithmsArrays & StringsSorting
0
0
10 people solved
Meta logo
Meta
Hard
Data Engineer

Write SQL for car rental utilization by city

SQL / Data Query Prompt (Car Rental) You are given four tables: user - user_id location - location_id - city car - car_id - car_size (e.g., compact, m...

Coding & AlgorithmsSQL
15
3
228 people solved
Dec 1, 2025
Intuit logo
Intuit
Medium
Data Scientist

Exclude free subscribers via anti-join

Extend your previous monthly new-subscriber + YoY query to exclude companies that ever received a free subscription, using an anti-join against Free_S...

Data Manipulation (SQL/Python)
5
0
70 people solved
Oct 13, 2025
TikTok logo
TikTok
Medium
Product Manager

Turning TikTok Viewers into Buyers for TikTok's Shopping Platform

You are a product manager at TikTok. How would you use the TikTok app to bring customers to TikTok's shopping platform? Explain which customers you wo...

Product Design & StrategyGrowth & MonetizationMetrics & KPIs
1
0
14 people solved
Jun 8, 2026
Instacart logo
Instacart
Medium
Software Engineer Locked

Discuss an Interesting Project and a Deployment Mistake

Discuss an interesting project and a deployment mistake with clear ownership, technical tradeoffs, recovery evidence, and lessons that changed later w...

Behavioral & LeadershipFailure & LearningProject Deep Dive
3
0
34 people solved
Sep 6, 2026
Coinbase logo
Coinbase
Medium
Software Engineer Locked

Design query pagination for large datasets

This question evaluates a candidate's understanding of pagination strategies, cursor/keyset design, SQL query formulation, consistency guarantees unde...

System DesignAPI DesignIndexing & Query Performance
32
0
260 people solved
Feb 11, 2026
Microsoft logo
Microsoft
Medium
Machine Learning Engineer Locked

Implement SFT Sample Packing

This question evaluates proficiency in preprocessing for autoregressive language models, including deterministic sequence packing, construction of los...

Coding & Algorithms
7
0
83 people solved
Apr 13, 2026
Snowflake logo
Snowflake
Medium
Software Engineer

Multithreaded Web Crawler with Retries for a Failing Fetch API

Write a web crawler. Starting from one URL, it visits every page reachable by following links, using an API that fetches a page and returns the URLs t...

Software Engineering FundamentalsConcurrencyGraphs
1
0
16 people solved
Apr 28, 2026
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